Arm Structure/Linkage for Robotic Arms and Grippers

Product Specifications

Technical details and manufacturing context for Arm Structure/Linkage

Definition

The arm structure/linkage is the fundamental mechanical assembly within a tool gripper or robotic arm system that determines its range of motion, load capacity, and precision. It consists of interconnected rigid members (links) connected by joints that allow controlled movement. This component provides the structural integrity to support the gripper mechanism, withstand operational forces, and transmit motion from actuators to the end effector. Its design directly impacts the arm's reach, dexterity, stiffness, and overall performance in industrial applications. In a typical industrial setting, the arm structure is selected based on the required reach, payload, and precision. The rated load capacity ranges from 5 to 50 kg, with a reach of 500 to 2000 mm. The degrees of freedom vary from 4 to 6, balancing flexibility and stiffness. Repeatability is specified as ±0.05 to ±0.1 mm, critical for precision assembly. Operating temperature ranges from -10°C to +60°C, outside which lubricants and seals may fail. The maximum operating pressure is 1.0 to 1.6 MPa. Materials commonly used include aluminum alloys (6061-T6 or 7075-T6), steel, and carbon fiber composite. The weight of the arm structure ranges from 15 to 80 kg, affecting the payload capacity of the base. Ingress protection ratings are IP54 to IP65, with IP65 for washdown environments. Supply voltage is 24 V DC ±10% for integrated sensors and actuators. When specifying an arm structure, verify model-specific values and standards with the legal manufacturer or supplier. Standards such as ISO 9283 for performance criteria serve as procurement references, not proof of certification. Always confirm that the selected arm meets the application's load, reach, and environmental requirements.

Working Principle

The arm structure operates through mechanical linkages that convert input motion (typically from motors or actuators) into controlled output movement at the gripper. Links are connected by rotational or prismatic joints that constrain motion along specific degrees of freedom. When actuators apply force, the linkage system transmits this force through the rigid members, creating precise positional changes at the end effector while maintaining structural stability and load distribution.

Common Materials

Aluminum alloy, Steel, Carbon fiber composite

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Load Capacity	5–50 kg	At rated load, deflection remains within specified limits.ISO 9283
Reach	500–2000 mm	Defines the maximum working envelope.
Degrees of Freedom	4–6	More DOF increases flexibility but reduces stiffness.
Repeatability	±0.05–±0.1 mm	Critical for precision assembly tasks.ISO 9283
Operating Temperature	-10–+60 °C	Outside this range, lubricants and seals may fail.
Material Grade	6061-T6 / 7075-T6	Aluminum alloys for lightweight and high strength.ASTM B211
Weight	15–80 kg	Affects the payload capacity of the base.
Supply Voltage	24 V DC ±10% V	For integrated sensors and actuators.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Base Link Part
Primary structural member attached to the arm's base or mounting point, providing foundation for the entire linkage system

Material: Steel or aluminum alloy
Intermediate Links Part
Connecting members between joints that transmit motion and forces through the arm structure

Material: Aluminum alloy or carbon fiber
End Effector Mount
Interface point where the tool gripper attaches to the arm structure, designed for secure connection and precise alignment

Material: Steel or aluminum alloy
Joint Assemblies
Mechanical connections between links that allow controlled rotational or linear motion while maintaining structural integrity

Material: Steel with bearing surfaces

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Tool Gripper / Arm

View system integration details

Manufacturers of Arm Structure/Linkage

Manufacturer profiles associated with Arm Structure/Linkage.

Sourcing Arm Structure/Linkage from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the typical load capacity of an arm structure?

The rated load capacity is typically between 5 and 50 kg, but this must be confirmed for the specific model and application. Always verify with the manufacturer.

What materials are commonly used for arm structures?

Common materials include aluminum alloys (such as 6061-T6 or 7075-T6), steel, and carbon fiber composite. The choice depends on weight, strength, and cost requirements.

What is the repeatability of an arm structure?

Repeatability is typically ±0.05 to ±0.1 mm, which is critical for precision tasks. However, actual values depend on the specific model and should be verified with the supplier.

What standards apply to arm structures?

ISO 9283 is often referenced for performance criteria. These standards serve as procurement references, not proof of certification. Always confirm compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Arm Structure/Linkage

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Up to 10 MPa static load
other spec:	Max dynamic load: 500 kg, Max torque: 200 Nm, Max angular velocity: 180°/s
temperature:	-40°C to 120°C

Arm Structure/Linkage

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards